Windows 7 - Problem with full screen on games

I have an Asus G64VX laptop that is just about a year old. I"m not sure this is the right section to post this question, but definitely having a problem here. My issue is that recently it won't play games full screen. For a while I've been able to restart the computer and the games would go to full screen right away, but after a few times it would stop working again. Now, I can restart and they won't go at all. I can't play some games at all anymore because they go down to my task bar. Can anyone help me? I have a few weeks left on the warranty but would hate to have to send the laptop in for something like this, yet it's not performing how it should.

Hello cantcme99,
Check with Asus's website, and make sure your graphics card is up-to-date. It could also be that your computer is on power saving performance. Check to see that it is on normal or high performance when you are entering full screen.

Let us know,
Ben

It appears to have been a driver thing. I downloaded an update and so far so good. I'll let you know if things don't work out. Thanks for the help. Much appreciated!